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pcanal
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Apr 23, 2026
Test Results 22 files 22 suites 3d 15h 14m 18s ⏱️ For more details on these failures, see this check. Results for commit ec0de0a. ♻️ This comment has been updated with latest results. |
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Impressive PR: thanks for it. It should be backported until 6.36. |
silverweed
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Apr 24, 2026
vepadulano
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LGTM, let's wait for the CI. Just a minor consideration.
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pcanal
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pcanal
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pcanal
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Use UUIDv4 in TDirectory (hence in TDirectoryFile and TFile) and in the RMiniFile. Note that TDirectory is used without gSystem (needed for GetCryptoRandom()) in the context of rootcling. In principle, GetCryptoRandom() should work without a TSystem object. That may be for a later commit. The UUIDv4, unlike the current UUIDv1, is (with high enough probability) globally unique.
Factor out calling the OS crypto random number generator into a free function in the Base package. In turn, TSystem::GetCryptoRandom() can be static and does not rely in gSystem being initialized.
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/backport to 6.40,6.38,6.36 |
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Use UUIDv4 in TDirectory (hence in TDirectoryFile and TFile) and in the RMiniFile. Note that TDirectory is used without gSystem (needed for GetCryptoRandom()) in the context of rootcling. In principle, GetCryptoRandom() should work without a TSystem object. That may be for a later PR.
The UUIDv4, unlike the current UUIDv1, is (with high enough probability) globally unique.
Also fixes a race in TUUID::AsString().
EDIT: The last two commits factor out the
GetCryptoRandom()into a free function, so that it can be used unconditionally in the I/O.Fixes #22015
Replaces #22016